Scott I had some TS-51's YEARS AGO... to say they were junk would be an under statement! The stock arms are a hard brittle plastic when new I can only imagine how bad they would be 17 years old. The cases were also a brittle plastic, the ears on one or two of them(it's been a long time) cracked. They sounded like the gears were grinding together rather than meshing together. I used one for throttle on a Q-500 plane for a bit and threw the others away I'd buy new servos, it just not worth risking a plane for what 4 new standard servos cost.

John